Bolting-up device



F. F. WHITMORE.

BOLTING UP DEVICE.

APPLICATION FILED MAR. 6. 1919. RENEWED APR. 7,1920.

1,340,470. Pate ted May 18, 1920.

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ummtoz Frame/riff h/fiifmare UNITED STATES PAZIENT orrrca.

mnmonr r. wnrrmoim, or smrrnn. WASHINGTON.

BOLTING-UP DEVICE.

Specification of Letters l'atent.

Patented May 18, 1920.

Application filed March 6, 1919, Serial .No. 281,011. Renewed April 7,1920. Serial No. 372,096.

T5 all whom it may concern:

Be it known that I, FREMONT F. WHIT- MORE, a citizen of the UnitedStates, and resident of the city of Seattle, county of King, and Stateof Washington, have invented certain new and useful Improvements inBolting-Up Devices, of which the following is a specification.

My' invention relates to new and useful improvements in bolting-updevices and more particularly to that class of bolt up devices asemployed by bolter-ups in the shipbuilding construction. The

present system of securing together ship plates, boiler plates andplates of like character, preliminary to riveting, entails gangs of twomen each, a bolter-up and a helper, the helper is employed to insert thebolts through the holes in the plates and holds the head thereof betweena wrench,- or

', other suitable tool, to preclude the rotation.

of the bolt when the bolter-up on the op-- posite side of the plate isapplying the nut thereto.

The object of this invention is to provide a bolt of novel design thatwill eliminate the services of the helper to the bolter-up. A furtherobject resides in the simplicity of construction of a bolt having aheadless end that is adapted to be inserted through the holes of two ormore superimposed plates and having means provided on its headless endthat is adapted to be automatically projected laterally after the bolthas been inserted through the holes so as preclude its withdrawal.

Other objects will appear from a study of the following specification,illustrated in the accompanying drawings, and finally pointed out in theappended claims.

In the drawings,

Figure 1 is a view in "side elevation of a bolting-up device.

Fig. 2 is a plan view of the same, and,

Fig. 3 is a view inside elevation, show1 ing it applied to the platespreparatory to urging them together. v

Referring more particularly to the drawings, in which like referencenumerals indicate like parts, the numeral 4 represents a bolt having astem which is threaded 1n the usual manner. The outer end of this stemis preferably flattened, as at 5, on two sides, and can be provided witha hole 6, through the center, for the reception of a drift pin (notshown) or the flattened surface can be engaged by a wrench and the boltheld against rotation when the nut 15 1s applied thereto. The headlessend of the bolt is preferably1 tapered so as to be more easily insertedt rough the holes 7 of the. plates 8. v

Upon opposite sides of the headless end of the bolt, in reversedrelation, are provided shoulders 14 of the slot and the peripheralouteredge of the pins elongated ends, which serves to impart rigidity againstdisplace ment when in this extended position.

The operation of this bolt tightening device is obvious. The headlessend is first inserted through the holes in the superimposed plates 8until the headless end is ex-- tended sufiiciently past the outer sidethereof to give clearance for the elongated end of the pin to swingdownward by gravit until it assumes the position as shown in Fig. 3,precluding the bolts withdrawal through the holes. The nut 15 can thenbe screwed up tightly and the respective plates 8 will be urgedtogether.

In the event the bolt should turn freely when the nut is appliedthereto, a drift pin held by one hand, can be inserted through the hole6, or a wrench applied to the flattened part 5 thereof, and with thebolterups other hand free the nut 15 can be screwed down tightly, thuseliminating the services of the helper on the opposite side of theplate.-

While I have shown two pivotally 'attached members to the bolt, it is tobe understood that one or more will sufiice.

Having thus described my invention, what I claim as new and desireprotected by Letters Patent, is:

1. A bolting up device comprising a bolt having one end threaded toreceive a nut, the other end of the bolt having recesses in its sidesconsisting of a transversely extending part and a part extendinglengthwise of the bolt and having a side wall at one side, and barspivoted in the transversely extending part of said grooves and eachhaving an end ada ted ,to fit within the longitudinally exten ing partof one of the grooves, said bars having side surfaces adapted to enga ethe side walls of the transversely exten ing part of the grooves whenthe bar is placed in a transverse direction.

2. A bolting-up device for tightening plates together comprising amember'threaded at one end thereof and adapted to be held againstrotation on its threaded end, a nut carried by said threaded end, theunthreaded end of said member adapted to be inserted through the holesin? said plates, angularly shaped slots provided on opposite s des ofsaid unthreaded end, pins pivotally disposed within said slots havingshoulders adapted to abut against the shoulders of said slots when swungto a lateral position, whereupon said plates can be urged together whensaid nut is screwed down tightly.

Signed at Seattle, Washington, this 27th day of Februar 1919.

FRE ONT F. WHITMORE.

